package com.teamb6.shop.controller.front;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.alipay.api.request.AlipayTradeRefundRequest;
import com.teamb6.shop.controller.AlipayConfig;
import com.teamb6.shop.domain.Goods;
import com.teamb6.shop.domain.Indent;
import com.teamb6.shop.domain.OrderItem;
import com.teamb6.shop.domain.OrderItemExample;
import com.teamb6.shop.service.GoodsService;
import com.teamb6.shop.service.IndentService;
import org.apache.catalina.Session;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.HttpCookie;
import java.text.SimpleDateFormat;
import java.util.*;

@Controller
@RequestMapping(value = "/alipay")
public class AlipayController {
    @Autowired
    private GoodsService goodsService;

    @Autowired
    private IndentService indentService;


    //    @ApiOperation(value = "发起支付", notes = "支付宝")
    @RequestMapping(value = "/pay", method = RequestMethod.POST)
    @ResponseBody
    public void pay(HttpServletRequest httpRequest, HttpServletResponse httpResponse, HttpSession session)
            throws ServletException, IOException {
        session = httpRequest.getSession();
        Integer orderid = (Integer) session.getAttribute("orderId");
        Float total_amount = (Float) session.getAttribute("newprice");

        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key
                , AlipayConfig.format, AlipayConfig.charset,AlipayConfig.alipay_public_key, AlipayConfig.sign_type); // 获得初始化的AlipayClient
        // 创建API对应的request
        AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();
        alipayRequest.setReturnUrl(AlipayConfig.return_url);
        alipayRequest.setNotifyUrl(AlipayConfig.notify_url);
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
        // 商户订单号，商户网站订单系统中唯一订单号，必填
        String out_trade_no = sdf.format(new Date());
        out_trade_no = out_trade_no + orderid;

        // 在公共参数中设置回跳和通知地址
        alipayRequest.setBizContent("{\"out_trade_no\":\"" + out_trade_no + "\","
                + "    \"product_code\":\"FAST_INSTANT_TRADE_PAY\"," + "    \"total_amount\":"+total_amount+","
                + "    \"subject\":\"商品\"," + "    \"body\":\"拉拉\","
                + "    \"passback_params\":\"merchantBizType%3d3C%26merchantBizNo%3d2016010101111\","
                + "    \"extend_params\":{" + "    \"sys_service_provider_id\":\"2088511833207846\"" + "    }" + "  }");// 填充业务参数
        String form = "";
        try {
            form = alipayClient.pageExecute(alipayRequest).getBody(); // 调用SDK生成表单
            AlipayConfig.logResult(form);// 记录支付日志
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        httpResponse.setContentType("text/html;charset=" + AlipayConfig.charset);
        httpResponse.getWriter().write(form);// 直接将完整的表单html输出到页面
        httpResponse.getWriter().flush();
        httpResponse.getWriter().close();
    }

    //    @ApiOperation(value = "支付同步回调", notes = "支付宝")
    @RequestMapping(value = "/returnUrl", method = RequestMethod.GET)
    public void returnUrl(HttpServletRequest request, HttpServletResponse response)
            throws IOException, AlipayApiException {
        System.out.println("=================================同步回调=====================================");

        // 获取支付宝GET过来反馈信息
        Map<String, String> params = new HashMap<String, String>();
        Map<String, String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i] : valueStr + values[i] + ",";
            }
            // 乱码解决，这段代码在出现乱码时使用
//            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        System.out.println(params);
        boolean signVerified =  AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type);

        // ——请在这里编写您的程序（以下代码仅作参考）——
        if (signVerified) {
            // 商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

            // 支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

            // 付款金额
            String total_amount = new String(request.getParameter("total_amount").getBytes("ISO-8859-1"), "UTF-8");

            System.out.println("商户订单号="+out_trade_no);
            System.out.println("支付宝交易号="+trade_no);
            System.out.println("付款金额="+total_amount);

            response.sendRedirect("/main");
        } else {
            response.getWriter().write("验签失败");
            response.getWriter().flush();
            response.getWriter().close();
        }
    }

    //            @ApiOperation(value = "支付异步回调", notes = "支付宝")
    @RequestMapping(value = "/notifyUrl", method = RequestMethod.POST)
    public void notifyUrl(HttpServletRequest request, HttpServletResponse response, HttpSession session)
            throws AlipayApiException, IOException {
        System.out.println("#################################异步回调######################################");

        // 获取支付宝POST过来反馈信息
        Map<String, String> params = new HashMap<String, String>();
        Map<String, String[]> requestParams = request.getParameterMap();
        for (Iterator<String> iter = requestParams.keySet().iterator(); iter.hasNext();) {
            String name = (String) iter.next();
            String[] values = (String[]) requestParams.get(name);
            String valueStr = "";
            for (int i = 0; i < values.length; i++) {
                valueStr = (i == values.length - 1) ? valueStr + values[i] : valueStr + values[i] + ",";
            }
            // 乱码解决，这段代码在出现乱码时使用
//            valueStr = new String(valueStr.getBytes("ISO-8859-1"), "utf-8");
            params.put(name, valueStr);
        }

        System.out.println(params);
        boolean signVerified = AlipaySignature.rsaCheckV1(params, AlipayConfig.alipay_public_key, AlipayConfig.charset, AlipayConfig.sign_type); // 调用SDK验证签名

        // ——请在这里编写您的程序（以下代码仅作参考）——

        /*
         * 实际验证过程建议商户务必添加以下校验： 1、需要验证该通知数据中的out_trade_no是否为商户系统中创建的订单号，
         * 2、判断total_amount是否确实为该订单的实际金额（即商户订单创建时的金额）， 3、校验通知中的seller_id（或者seller_email)
         * 是否为out_trade_no这笔单据的对应的操作方（有的时候，一个商户可能有多个seller_id/seller_email）
         * 4、验证app_id是否为该商户本身。
         */
        if (signVerified) {// 验证成功
            // 商户订单号
            String out_trade_no = new String(request.getParameter("out_trade_no").getBytes("ISO-8859-1"), "UTF-8");

            // 支付宝交易号
            String trade_no = new String(request.getParameter("trade_no").getBytes("ISO-8859-1"), "UTF-8");

            // 交易状态
            String trade_status = new String(request.getParameter("trade_status").getBytes("ISO-8859-1"), "UTF-8");

            System.out.println("商户订单号="+out_trade_no);
            System.out.println("支付宝交易号="+trade_no);
            System.out.println("交易状态="+trade_status);
            if (trade_status.equals("TRADE_FINISHED")) {
                // 判断该笔订单是否在商户网站中已经做过处理
                // 如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                // 如果有做过处理，不执行商户的业务程序

                // 注意：
                // 退款日期超过可退款期限后（如三个月可退款），支付宝系统发送该交易状态通知
            } else if (trade_status.equals("TRADE_SUCCESS")) {
                // 判断该笔订单是否在商户网站中已经做过处理
                // 如果没有做过处理，根据订单号（out_trade_no）在商户网站的订单系统中查到该笔订单的详细，并执行商户的业务程序
                // 如果有做过处理，不执行商户的业务程序
                //获取订单中的具体商品

                Integer orderid = Integer.parseInt(out_trade_no.substring(17,out_trade_no.length()));

                OrderItemExample orderItemExample = new OrderItemExample();
                orderItemExample.or().andOrderidEqualTo(orderid);
                List<OrderItem> orderItems = indentService.getOrderItemByExample(orderItemExample);

                //销量+1
                Goods goods = new Goods();
                for(OrderItem orderItem : orderItems){
                    goods = goodsService.selectById(orderItem.getGoodsid());
                    goods.setSales(goods.getSales()+1);
                    goodsService.updateGoods(goods);
                }

                //修改为已支付
                Indent indent = indentService.selectByPrimaryKey(orderid);
                indent.setIspay(true);
                indentService.updateIndentByKey(indent);
                // 注意：
                // 付款完成后，支付宝系统发送该交易状态通知
            }

            System.out.println("异步回调验证成功");
            response.getWriter().write("success");

        } else {// 验证失败
            System.out.println("异步回调验证失败");
            response.getWriter().write("fail");

            // 调试用，写文本函数记录程序运行情况是否正常
            // String sWord = AlipaySignature.getSignCheckContentV1(params);
            // AlipayConfig.logResult(sWord);
        }
        response.getWriter().flush();
        response.getWriter().close();
    }


    //退款
    @RequestMapping("/refund")
    public void refund(HttpServletResponse response,HttpSession session) throws IOException, AlipayApiException {
        response.setContentType("text/html;charset=utf-8");
        PrintWriter out = response.getWriter();
        //获得初始化的AlipayClient
        AlipayClient alipayClient = new DefaultAlipayClient(AlipayConfig.gatewayUrl, AlipayConfig.app_id, AlipayConfig.merchant_private_key, "json", AlipayConfig.charset, AlipayConfig.alipay_public_key, AlipayConfig.sign_type);
        //设置请求参数
        AlipayTradeRefundRequest alipayRequest = new AlipayTradeRefundRequest();
        //商户订单号，必填
        String out_trade_no = "20190808170216026118";
        //需要退款的金额，该金额不能大于订单金额，必填
        String refund_amount = "4";
        //标识一次退款请求，同一笔交易多次退款需要保证唯一，如需部分退款，则此参数必传
        String out_request_no = new String(UUID.randomUUID().toString());

        alipayRequest.setBizContent("{\"out_trade_no\":\""+ out_trade_no +"\","
                + "\"refund_amount\":\""+ refund_amount +"\","
                + "\"out_request_no\":\""+ out_request_no +"\"}");
        //请求
        String result = alipayClient.execute(alipayRequest).getBody();
        //输出
        out.println(result);
    }
}